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IMPROVING QUALITY OF BIRD CHILLER WATER FOR RECYCLING BY DIATOMACEOUS EARTH FILTRATION AND CHLORINATION
Author(s) -
LILLARD H. S.
Publication year - 1978
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1978.tb02535.x
Subject(s) - chiller , environmental science , fecal coliform , chemistry , filtration (mathematics) , water quality , pulp and paper industry , alum , environmental chemistry , environmental engineering , ecology , mathematics , statistics , physics , thermodynamics , organic chemistry , engineering , biology
Bird chiller water was filtered in a vertical tank pressure leaf filter by use of two grades of Diatomaceous Earth (DE). With both grades of DE, significant reductions were obtained in suspended solids, dissolved matter, grease, COD, BOD and total Kjeldahl nitrogen so that effective bactericidal treatment was accomplished with 26‐28 ppm chlorine gas. Total aerobic counts, fecal coliforms and salmonellae were essentially eliminated from filtered, chlorinated water. The pH of filtered chiller water was similar to the pH of the unfiltered water. Clarity and light transmission compared favorably with potable water. Filtered, chlorinated chiller water was neither esthetically nor microbiologically objectionable. It was concluded that filtered chiller water could safely be reused to flume broiler giblets.